/* See LICENSE for license details. */

#include <stdint.h>
#include <sys/types.h>

/* macros */
#define MIN(a, b) ((a) < (b) ? (a) : (b))
#define MAX(a, b) ((a) < (b) ? (b) : (a))
#define LEN(a) (sizeof(a) / sizeof(a)[0])
#define BETWEEN(x, a, b) ((a) <= (x) && (x) <= (b))
#define DIVCEIL(n, d) (((n) + ((d)-1)) / (d))
#define DEFAULT(a, b) (a) = (a) ? (a) : (b)
#define LIMIT(x, a, b) (x) = (x) < (a) ? (a) : (x) > (b) ? (b) : (x)
#define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg)
#define TIMEDIFF(t1, t2)                                                                 \
  ((t1.tv_sec - t2.tv_sec) * 1000 + (t1.tv_nsec - t2.tv_nsec) / 1E6)
#define MODBIT(x, set, bit) ((set) ? ((x) |= (bit)) : ((x) &= ~(bit)))

#define TRUECOLOR(r, g, b) (1 << 24 | (r) << 16 | (g) << 8 | (b))
#define IS_TRUECOL(x) (1 << 24 & (x))

enum glyph_attribute
{
  ATTR_NULL = 0,
  ATTR_BOLD = 1 << 0,
  ATTR_FAINT = 1 << 1,
  ATTR_ITALIC = 1 << 2,
  ATTR_UNDERLINE = 1 << 3,
  ATTR_BLINK = 1 << 4,
  ATTR_REVERSE = 1 << 5,
  ATTR_INVISIBLE = 1 << 6,
  ATTR_STRUCK = 1 << 7,
  ATTR_WRAP = 1 << 8,
  ATTR_WIDE = 1 << 9,
  ATTR_WDUMMY = 1 << 10,
  ATTR_BOLD_FAINT = ATTR_BOLD | ATTR_FAINT,
};

enum selection_mode
{
  SEL_IDLE = 0,
  SEL_EMPTY = 1,
  SEL_READY = 2
};

enum selection_type
{
  SEL_REGULAR = 1,
  SEL_RECTANGULAR = 2
};

enum selection_snap
{
  SNAP_WORD = 1,
  SNAP_LINE = 2
};

typedef unsigned char uchar;
typedef unsigned int uint;
typedef unsigned long ulong;
typedef unsigned short ushort;

typedef uint_least32_t Rune;

#define Glyph Glyph_
typedef struct
{
  Rune u;      /* character code */
  ushort mode; /* attribute flags */
  uint32_t fg; /* foreground  */
  uint32_t bg; /* background  */
} Glyph;

typedef Glyph * Line;

typedef union
{
  int i;
  uint ui;
  float f;
  const void * v;
  const char * s;
} Arg;

void die(const char *, ...);
void redraw(void);
void draw(void);

void printscreen(const Arg *);
void printsel(const Arg *);
void sendbreak(const Arg *);
void toggleprinter(const Arg *);

int tattrset(int);
void tnew(int, int);
void tresize(int, int);
void tsetdirtattr(int);
void ttyhangup(void);
int ttynew(const char *, char *, const char *, char **);
size_t ttyread(void);
void ttyresize(int, int);
void ttywrite(const char *, size_t, int);

void resettitle(void);

void selclear(void);
void selinit(void);
void selstart(int, int, int);
void selextend(int, int, int, int);
int selected(int, int);
char * getsel(void);

size_t utf8encode(Rune, char *);

void * xmalloc(size_t);
void * xrealloc(void *, size_t);
char * xstrdup(const char *);

/* config.h globals */
extern char * utmp;
extern char * scroll;
extern char * stty_args;
extern char * vtiden;
extern wchar_t * worddelimiters;
extern int allowaltscreen;
extern int allowwindowops;
extern char * termname;
extern unsigned int tabspaces;
extern unsigned int defaultfg;
extern unsigned int defaultbg;
extern unsigned int defaultcs;
